/* ── Light (default) ── */
:root {
  --bg: #ffffff;
  --fg: #111827;
  --bg-secondary: #f9fafb;
  --border: #e5e7eb;
  --border-light: #f3f4f6;
  --muted: #6b7280;
  --link: #2563eb;
  --code-bg: #111827;
  --code-fg: #e5e7eb;
  --card-bg: #ffffff;
  --input-bg: #ffffff;
  --input-border: #d1d5db;
  --btn-bg: #111827;
  --btn-fg: #ffffff;
  --btn-hover: #374151;
  --btn-secondary-bg: #ffffff;
  --btn-secondary-fg: #111827;
  --btn-secondary-border: #d1d5db;
  --btn-secondary-hover: #f3f4f6;
  --hr: #e5e7eb;
  --nav-bg: transparent;
  --badge-pass-bg: #d1fae5;
  --badge-pass-fg: #065f46;
  --badge-fail-bg: #fee2e2;
  --badge-fail-fg: #991b1b;
  --badge-warn-bg: #fef3c7;
  --badge-warn-fg: #92400e;
  --guidance-bg: #eff6ff;
  --guidance-border: #3b82f6;
  --guidance-fg: #1e40af;
  --tag-bg: #f3f4f6;
  --tag-border: #d1d5db;
  --empty-bg: #fef3c7;
  --empty-fg: #92400e;
}

/* ── Dark ── */
[data-theme="dark"] {
  --bg: #0f172a;
  --fg: #e2e8f0;
  --bg-secondary: #1e293b;
  --border: #334155;
  --border-light: #1e293b;
  --muted: #94a3b8;
  --link: #60a5fa;
  --code-bg: #1e293b;
  --code-fg: #e2e8f0;
  --card-bg: #1e293b;
  --input-bg: #0f172a;
  --input-border: #475569;
  --btn-bg: #e2e8f0;
  --btn-fg: #0f172a;
  --btn-hover: #cbd5e1;
  --btn-secondary-bg: #1e293b;
  --btn-secondary-fg: #e2e8f0;
  --btn-secondary-border: #475569;
  --btn-secondary-hover: #334155;
  --hr: #334155;
  --nav-bg: transparent;
  --badge-pass-bg: #064e3b;
  --badge-pass-fg: #6ee7b7;
  --badge-fail-bg: #7f1d1d;
  --badge-fail-fg: #fca5a5;
  --badge-warn-bg: #78350f;
  --badge-warn-fg: #fde68a;
  --guidance-bg: #1e3a5f;
  --guidance-border: #3b82f6;
  --guidance-fg: #93c5fd;
  --tag-bg: #334155;
  --tag-border: #475569;
  --empty-bg: #78350f;
  --empty-fg: #fde68a;
}

/* ── Base ── */
body {
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  transition: background 0.2s, color 0.2s;
}

a {
  color: var(--link);
}

a:visited {
  color: var(--link);
}

hr {
  border: 0;
  border-top: 1px solid var(--hr);
}

/* ── Code blocks ── */
pre.code {
  background: var(--code-bg);
  color: var(--code-fg);
  border-radius: 12px;
  padding: 12px;
  overflow: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  font-size: 14px;
  line-height: 1.4;
}

pre.code.wrap {
  white-space: pre-wrap;
  word-break: break-word;
}

/* ── Empty value highlight ── */
.empty-val {
  background: var(--empty-bg);
  color: var(--empty-fg);
  padding: 1px 6px;
  border-radius: 4px;
  font-weight: 600;
}

/* ── Dark mode toggle ── */
.theme-toggle {
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-fg);
  border: 1px solid var(--btn-secondary-border);
  border-radius: 8px;
  padding: 4px 10px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
}

.theme-toggle:hover {
  background: var(--btn-secondary-hover);
}